ABSTRACT The influence of dopant concentration on PZT (54/46) systems doped with lanthanum and/or niobium is studied. The sintering kinetics is presented for 1 wt% of the dopant used to find the main mechanism which drives this process. The results were compared with a phenomenological model for viscous sintering and solid state sintering. The exponent obtained for viscous sintering in PZTN, PLZT and PLZTN were 0.05, 0.01, and 0.23 respectively, which indicate that the process is reactive liquid in all cases. In the other hand, the exponent obtained for solid state sintering were 6.61, 5.68, and 1.23 respectively, and prevalence Ost-wald ripening and coalescence process together. Both dopants inhibit the grain growth and accelerate the sintering process, which increases with dopant concentration and the combination of both dopants. Shoro-hod-Olevsky model was applied for explain grain growth evolution, but does not coincide strictly with the applied model, which suggest that the process is very complex.
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nullM. Durruthy-Rodríguez, F. Calderón-Piñar, C. Malfatti and L. Pérez-Fernández, "Sintering Kinetics of Soft-Doped PZT (54/46) Systems," Journal of Modern Physics, Vol. 2 No. 5, 2011, pp. 416-420. doi: 10.4236/jmp.2011.25051.
 W. D. Kingery, H. K. Bowen, D. R. Uhlmann, “Introduc- tion to Ceramics,” John Wiley & Sons, Inc., New York, 1976.
 M. Braginsky, V. Tikare, E. Olevsky, “Numerical Simulation of Solid State Sintering,” International Journal of Solids Structures, Vol. 42, No. 2, 2005, pp. 621-636.
 V. V. Skorohod, E. A. Olesvsky, M. B. Shtern, “Continnum Theory for Sintering of the Porous Bodies: Model and Application,” Science of Sintering, Vol. 23, No. 2, 1991, pp. 79-91.
 E. Olevsky, A. Molinari, “Instability of Sintering of Porous Bodies,” Internal Journal of Plasticity, Vol. 16, No. 1, 2000, pp. 1-37. doi:10.1016/S0749-6419(99)00032-7
 E. Olevsky, H. J. Dudek, W. A. Kaysser, “HIPing Conditions for Processing of Metal Matrix Composites Using the Continuum Theory for Sintering-I. Theoretical Analysis,” Acta Materialia, Vol. 44, No. 2, 1996, 707- 713. doi:10.1016/1359-6454(95)00179-4
 A. Boccaccini, D. M. R. Taplin, P. A. Trusty, C. B. Ponton, “Creep and Densification During Anisotropic Sintering of Glass Powders,” Journal of Material Science, Vol. 30, No. 22, 1995, pp. 5652-5656.
 T. Senda, R. C. Bradt, “Grain Growth in Sintered ZnO and ZnO-Bi2O3 Ceramics,” Journal of the American Ceramic Society, Vol. 73, No. 1, 1990, pp. 106-114.
 Q. Shaojun, Chao Gao, Z. Xiaodong, G. Xiaoxian, Y. Chen, C. Jin, F. Pinyang, F. Huiqing, “Grain Growth in Sintered Porous Pb(Zr0.95Ti0.05)O3 Ceramics,” Solid State Ionics, Vol. 179, No. 21-26, 2008, pp. 875-877.
 V. V. Skorohod, “Rheological Basis of Theory of Sintering,” Naukova Durka, Kiev, 1972.
 M. Hammer, M. J. Hoffmann, “Sintering Model for Mixed-Oxide-Derived Lead Zirconate Titanate Ceramics,” Journal of the American Ceramic Society, Vol. 81, No. 12, 1998, pp. 3277-3284.
 J. J. Prieto, M. D. Durruthy, F. Calderón, A. Tuero, A. Silverio, Rev Cub Fis, VI, 71 (1986).
 J. J. Prieto, M. D. Durruthy, F. Calderón, J. C. Llópiz, Rev Cub Fis, VI, 77 (1986).
 M. D. Durruthy, J. J. Prieto, A. Victorero, Rev Lat Met Mat, 9, 18 (1989).
 W. Wersing, K. Lubitz, J. Mohaupt, “Dielectric, Elastic and Piezoelectric Properties of Porous Pzt Ceramics,” Ferroelectrics, Vol. 68, No. 1, 1986, pp. 77-97.
 O. Bustos, R. Leiva, C. Sanchez, S. Ordo?ez, L. Carvajal, R. Mannheim, “Evolución microestructural y propiedades reológicas de la aleación AA6063 fabricada mediante técnicas de procesado semisólido (SIMA y MHD),” Revista de Metalugia, Vol. 43, No. 3, 2007, pp. 165-180. doi:10.3989/revmetalm.2007.v43.i3.62
 Suk-Joong L. Kang, “Sintering: Densification, Grain Growth and Microstructure,” Elsevier, Butterworth Heinemann, 2005, ISBN 0-7506-6385-5.